It runs it's own OS.
Basically, Blue and me seems to look for a volume to mount. Easiest solution is to buy a "memory stick" for your glove box, and just leave it plugged in.
Also worth noting, is that the system will only play .mp3 and .wma
At first I was dissapointed with this, but it's worked out really nice. I jsut leave a stick in the car, with a nive selection of music on it. I don't constantly have to unplug anything when I leave the car, at it's out of site on the GP, tucked away in the (tiny) glove box.